resume/lazyLoad.html at master · yafanisonya/resume · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>lazyLoad</title>
  <script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.js"></script>
  <style>
    .container{
      max-width:800px;
      margin:0 auto;
    }
    .container:after{
      content:'';
      display: block;
      clear:both;
    }
    .container img {
      float:left;
      width:50%;
    }
  </style>
</head>
<body>
  <div class="container">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/1.jpg">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/2.jpg">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/3.jpg">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/4.jpg">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/5.jpg">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/6.jpg">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/7.jpg">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/8.jpg">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/9.jpg">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/10.jpg">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/11.jpg">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/12.jpg">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/13.jpg">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/14.jpg">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/15.jpg">
      <img src="https://yafanisonya.github.io/resume/houseofcards/img/loading.gif" alt="" data-src="http://cdn.jirengu.com/book.jirengu.com/img/16.jpg">
  </div>
  <script>
    start()
    $(window).on('scroll',function(){
      start()
    })
    function start(){
      $('.container img').not('[data-isLoaded]').each(function(){
        var $node = $(this)
        if( isShow($node)){
          loadImg($node)
        }
      })
    }
    function isShow($node){
      return $node.offset().top <= $(window).height() + $(window).scrollTop()
    }
    function loadImg($img){
      $img.attr('src',$img.attr('data-src'))
      $img.attr('data-isLoaded',1)
    }
  </script>
</body>
</html>